National Geographic : 1949 May
© National Geographic Society 592 Kodachrome by Willard R. Culver A Patrol Helicopter Is Used by Pacific Gas and Electric Company to Inspect Its Lines California. counting farm use, is among our most highly electrified States. Such steel towers, carrying high tension wires, march for hundreds of miles about the State. Besides big city and industrial use, current goes to 97 towns of over 10,000, and country people use the energy for many jobs from shearing sheep and pumping water to fighting frost with big propellers that keep air in motion.